Malicious PDF — malware analysis report

Static analysis result for SHA-256 572f1ac1cc1a00fd…

MALICIOUS

PDF

71.8 KB Created: 2021-03-05 18:14:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d31991f11d179c61f9a69e0adf65503d SHA-1: 50210cd2cb6a82270be2f9e1cba50af40130628a SHA-256: 572f1ac1cc1a00fdeca75110d933858c14d93e2c300ed67d62d92a09341d5559
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dugedepap.ru/wix?keyword=ap+environmental+science+chapter+5+review+questions+answers PDF link annotation
    • https://cdn.sqhk.co/taxodisilif/iiNFo9h/action_item_to_do_list.pdfIn PDF document text
    • https://jiditejebata.weebly.com/uploads/1/3/5/3/135305220/7704167.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/2oSLgje/43601337906.pdfIn PDF document text
    • https://befomunuduti.weebly.com/uploads/1/3/1/1/131164266/9812120.pdfIn PDF document text
    • https://cdn.sqhk.co/xifusajexom/jjFhfij/download_crowd_clash.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/KigTght/star_trek_fleet_command_pc_bot.pdfIn PDF document text
    • https://metuliwilive.weebly.com/uploads/1/3/4/3/134386481/2753522.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416666/normal_603f68130ce2b.pdfIn PDF document text
    • https://cdn.sqhk.co/wosepimi/jijighg/mandala_coloring_book_app_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bogivinon/OjagfTW/35290927456.pdfIn PDF document text
    • https://lokawerimi.weebly.com/uploads/1/3/0/7/130776865/3424848.pdfIn PDF document text
    • https://wefizaxire.weebly.com/uploads/1/3/0/9/130969527/maradiwotafapot-fojike-befaxepapu.pdfIn PDF document text
    • https://vidiwubiref.weebly.com/uploads/1/3/0/8/130874646/7e2a408a8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470224/normal_60255f58bb5ae.pdfIn PDF document text
    • https://tosoremekik.weebly.com/uploads/1/3/4/7/134771766/revejamevupaga-gonebazo.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuneduzib/5jolgeL/65816456624.pdfIn PDF document text
    • https://veriketosamu.weebly.com/uploads/1/3/4/6/134675732/ac1ad7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/satulibaren/b_e_d_online_form_2019_date.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/cardiac_arrest_management_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/ascender_pay_user_guide.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30D 5564 bytes
SHA-256: 5bdd321312625a9aec3a5f4675527dfe2d65e17e215715eade21e844b460d684
font_01_sfnt_off0000e5ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5EE 13120 bytes
SHA-256: cfc781df0dfa464b8e6047cb45a928274cf1077744fb6bcf1afdc83bff709db8